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Elastic Docs ›Elastic Security Solution [8.5] ›Detections and alerts ›Prebuilt rule reference

Potential Kerberos Attack via Bifrost

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Potential Kerberos Attack via Bifrost

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Identifies use of Bifrost, a known macOS Kerberos pentesting tool, which can be used to dump cached Kerberos tickets or attempt unauthorized authentication techniques such as pass-the-ticket/hash and kerberoasting.

Rule type: query

Rule indices:

  • auditbeat-*
  • logs-endpoint.events.*

Severity: high

Risk score: 73

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • macOS
  • Threat Detection
  • Credential Access
  • Lateral Movement

Version: 100 (version history)

Added (Elastic Stack release): 7.12.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and event.type:start and
process.args:("-action" and ("-kerberoast" or askhash or asktgs or
asktgt or s4u or ("-ticket" and ptt) or (dump and (tickets or
keytab))))

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 100 (8.5.0 release)

  • Updated query, changed from:

    event.category:process and event.type:start and
process.args:("-action" and ("-kerberoast" or askhash or asktgs or
asktgt or s4u or ("-ticket" and ptt) or (dump and (tickets or
keytab))))
Version 3 (8.4.0 release)
  • Formatting only
Version 2 (7.16.0 release)
  • Formatting only
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